PLATE XXXIII . 1 
Amphiblestrum. — Electra. — Aspidostoma. — Carbasea, &c. 
PAGE 
Figure 1 . — Amphiblestrum papillatum* . . . .66 
la, magnified; lb, with avicularium. 
,, 2 . — Electra cylindracea, 2 . . . . . .78 
2a, 26, aperture with chitinous spines and avicularium ; 
2c, ooecium; 2d, 2e, upright process with large avicu- 
larium and chitinous appendages. 
„ 3 . — Aspidostoma giganteum, . . . . . .161 
3a, magnified ; 36, back view. 
,, 4 . — Carbasea moseleyi, . . . . . .56 
4a, magnified ; 46, more highly magnified, showing horse shoe 
mark ; 4c, interzooecial pore ; 4 d, retractor muscles. 
,, 5 . — Gemmellipora cribritheca* . . . . .176 
5a, operculum ; 56, magnified with ocecia. 
,, 6, 6a, 6 . — Adeona appendiculata* . . . . .181 
,, 7 . — Hippothoa flagellum, ...... 4 
,, 8 . — Salicornaria simplex, . . . . . .88 
8a, magnified. 
,, 9. — Salicornaria bicornis, . . . . . .90 
9a, 96, magnified zooecia. 
,, 10 . — Melicerita dubia* ...... 97 
10a, magnified ; 106, transverse section ; 10c, vicarious avicu- 
larium. 
1 The species thus marked (*) have been re-named since the plate was printed off. 
- See footnote on page 78 of text. 
